From 2336be8300f5bb35d8f9acd52d488607ecf45a68 Mon Sep 17 00:00:00 2001
From: Vincenzo Mantova <1962985+xworld21@users.noreply.github.com>
Date: Sat, 31 Jan 2026 09:49:21 +0000
Subject: [PATCH] perlPackages.LaTeXML: backport LaTeXML 0.9 fix for Unicode
 16.0 change

---
 pkgs/top-level/perl-packages.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 1791abfe97d8..2fcec7c6adff 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -18450,6 +18450,14 @@ with self;
     nativeBuildInputs = [
       pkgs.makeWrapper
     ];
+    patches = [
+      # backport LaTeXML 0.9 fix for Unicode 16.0 change
+      (fetchpatch {
+        url = "https://github.com/brucemiller/latexml/commit/4175d31afc8da61039adffaf8e42657196bff071.patch";
+        hash = "sha256-QimM8F9Jz8xYT/5q5C+YcGyVyNmDeQPE6/qVHaFfevE=";
+        includes = [ "lib/LaTeXML/Common/Font.pm" ];
+      })
+    ];
     makeMakerFlags = [
       "TEXMF=\${tex}"
       "NOMKTEXLSR"